package com.grandstream.website.app.security.interceptor;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;

import org.springframework.security.access.SecurityMetadataSource;
import org.springframework.security.access.intercept.AbstractSecurityInterceptor;
import org.springframework.security.access.intercept.InterceptorStatusToken;
import org.springframework.security.web.FilterInvocation;
import org.springframework.security.web.access.intercept.FilterInvocationSecurityMetadataSource;
/**  
 * 
 * 类描述：  
 * 创建人：Smile_zheng
  
 * 创建时间：2010-12-8 上午07:58:03  
 * 修改人：Smile_Zheng 
 * 修改时间：2010-12-8 上午07:58:03  
 * 修改备注：  
 * @version v 1.0
 *   
 */
/**
 * @author opensmile
 *
 */
public class DbFilterSecurityInterceptor extends AbstractSecurityInterceptor implements Filter{

	private FilterInvocationSecurityMetadataSource	securityMetadataSource;

	
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException{
		FilterInvocation fi = new FilterInvocation(request, response, chain);
		invoke(fi);
	}

	public FilterInvocationSecurityMetadataSource getSecurityMetadataSource(){
		return this.securityMetadataSource;
	}

	public Class<? extends Object> getSecureObjectClass(){
		return FilterInvocation.class;
	}

	public void invoke(FilterInvocation fi) throws IOException, ServletException{
		InterceptorStatusToken token = super.beforeInvocation(fi);
		try
		{
			fi.getChain().doFilter(fi.getRequest(), fi.getResponse());
		}
		finally
		{
			super.afterInvocation(token, null);
		}
	}

	public SecurityMetadataSource obtainSecurityMetadataSource(){
		return this.securityMetadataSource;
	}

	public void setSecurityMetadataSource(FilterInvocationSecurityMetadataSource newSource){
		this.securityMetadataSource = newSource;
	}

	public void destroy(){
	}

	public void init(FilterConfig arg0) throws ServletException{
	}

}
